I have run the align 600 l and xl and they are similar style to what you are looking at. I am sure that on 5s a123 it will work ok. I would gear for around 35mph with this setup.
2000kv on the equivalent of 4s lipo should be good for a few wheelies! To be honest I would like to see a 2000kv motor run 5s lipo, but this is a hybrid motor so it will most likely have more torque than a 2 pole inrunner (feigao).
So I am sure that it can handle the emaxx, just gear conservatively and keep checking your temps during testing.